Decreased plasma catecholamine and renin activity in children with difficulty waking up in the morning.
Plasma catecholamine concentration (CAT: adrenalin and noradrenalin) and plasma renin activity (PRA) were measured in 26 children, aged 10 to 15 years, who had difficulty waking up in the morning. CAT, which was examined only in the supine position in control children, and PRA, which was examined before and after standing for 15 min, were significantly lower than in age-matched control children. These results suggest that low CAT and PRA may contribute to difficulty waking up in the morning in childhood.
Uchiyama
M
M
Department of Pediatrics, Medical College of Oita, Japan.
D000293:Adolescent; D002395:Catecholamines / Q000097:blood*; D002648:Child; D002940:Circadian Rhythm / Q000502:physiology; D004837:Epinephrine / Q000097:blood; D006801:Humans; D009638:Norepinephrine / Q000097:blood; D012083:Renin / Q000097:blood*; D014851:Wakefulness / Q000502:physiology*
D002395:Catecholamines; D012083:Renin; D009638:Norepinephrine; D004837:Epinephrine